E.g., 'G21A CS 52kg 1 in 12' which refers to 52kg rails laid with concrete sleepers (CS) for a 1 in 12 turnout. Welded Rail Information signs are small yellow boards close to the ground, with black text indicating the kind of welded rail section ('LWR No. 13', or 'CWR No. 32', for instance), and the distance marker (km), length of section, date laid, date of destressing and neutral temperature